Publications of The Korean Astronomical Society (천문학논총)
- Volume 14 Issue 2
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- Pages.123-128
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- 1999
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- 1225-1534(pISSN)
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- 2287-6936(eISSN)
CHARACTERISTICS OF TRAO 14M RADIO TELESCOPE (1999)
대덕전파천문대 14m 전파망원경의 특성(1999)
- ROH DUK-GYOO (Taeduk Radio Astronomy Observatory, Korea Astronomy Observatory) ;
- JUNG JAE HOON (Taeduk Radio Astronomy Observatory, Korea Astronomy Observatory)
- Published : 1999.12.01
Abstract
The beam size and the antenna efficiency of TRAO 14m radio telescope were measured at 86.2, 98.0 and 115.2 GHz. The beam size was determined by deconvolving the azimuthal scanning data of the Venus. To test the accuracy of our deconvolution method, the beam size at 86.2 GHz was compared with that determined from the mapping data of SiO maser line and we found no difference between them. With above beam sizes, antenna efficiencies were calculated from the continuum measurements of Venus, Jupiter and Moon. The beam efficiencies at these frequencies are appeared to be 0.49, 0.45 and 0.41, respectively. On the other hand, we also suggest that an automatic focus setting can be adopted for TRAO radio telescope based on the gradual change of best focus with elevation.
대덕전파천문대 14m전파망원경의 주빔의 크기를 점 전파원인 SiO메이저원 및 금성을 관측하여 결정하였다. 점 전파원 매핑으로 측정하였을 때 주빔의 모양은 방위각 방향으로 일그러진